why parents need to know what your kids are listening to

While I've never been a Rap fan, Recently my son asked me if he could listen to some of my old Ozzie songs, at that moment I realized that some of the music I grew up to and loved was not music that I needed to listen more less my son. I told him that even though I didn't listen to anymore that it was not music that we as Christians should listen to. For though we are in the world, we are not to be of it.  Parents let us be aware of what our children are listening to. Let us be aware of what we do for our children are watching us.